Dissolved oxygen detection device

Abstract

The utility model belongs to the technical field of dissolved oxygen detection of carton packaged milk, and discloses a dissolved oxygen detection device which comprises a sampling valve, a peristaltic pump, a dissolved oxygen meter and connecting hoses, the sampling valve, the peristaltic pump and the dissolved oxygen meter are connected through the connecting hoses, the sampling valve can be inserted into the carton milk, the peristaltic pump can suck the milk into the dissolved oxygen meter, and the dissolved oxygen meter is connected with the sampling valve. The dissolved oxygen meter can detect the oxygen content of milk so as to sample the milk in the paper box under the condition that the milk in the paper box is not opened. According to the utility model, the sampling valve is inserted into paper box milk and is matched with the peristaltic pump, the dissolved oxygen meter and the connecting hose for use, so that the milk can be detected under the condition of not opening a bag, the numerical value of the oxygen content can be accurately obtained so as to truly reflect the influence of the processing technology on the dissolved oxygen of a product, and excessive waste cannot be caused in the detection process; the detection efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of dissolved oxygen detection technology for milk in paper carton packaging, and in particular to a dissolved oxygen detection device. Background Technology

[0002] With the continuous improvement of living standards and changing consumption concepts, people are paying more attention to their health and nutritional needs. Milk, as a food with high nutritional value, is highly favored by consumers. However, dissolved oxygen in milk has a negative impact on its quality, mainly in two ways: firstly, it leads to the loss of nutrients, specifically, dissolved oxygen can cause oxidation and loss of nutrients such as fats and vitamin C; secondly, it leads to the deterioration of milk flavor, as dissolved oxygen easily causes the fats in milk to oxidize and deteriorate, producing substances such as aldehydes and ketones, which in turn produce an off-odor. Therefore, it is necessary to control the dissolved oxygen in milk during the production process. Currently, dissolved oxygen can be controlled in milk production and processing stages such as degassing, sterilization, aseptic tanks, and filling to reduce the dissolved oxygen in the final product. However, how to quickly, efficiently, and accurately detect the dissolved oxygen content in finished products, especially milk packaged in cardboard boxes, without waste, remains a problem that needs to be solved by those in the field. Utility Model Content

[0003] The purpose of this invention is to provide a dissolved oxygen detection device for quickly, efficiently, and accurately detecting the dissolved oxygen content in finished products, especially milk products packaged in cardboard boxes, without wasting resources.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A dissolved oxygen detection device for detecting the oxygen content of milk in carton milk, wherein the dissolved oxygen detection device includes:

[0006] The system includes a sampling valve, a peristaltic pump, a dissolved oxygen meter, and a connecting hose. The sampling valve, the peristaltic pump, and the dissolved oxygen meter are all connected through the connecting hose. The sampling valve can be inserted into the carton of milk, the peristaltic pump can draw the milk into the dissolved oxygen meter, and the dissolved oxygen meter can detect the oxygen content of the milk, so as to complete the sampling of the milk in the carton without opening the carton.

[0007] Optionally, the dissolved oxygen meter is equipped with a valve and a test button, which can switch the normally closed valve to the open state to test the milk.

[0008] Optionally, the dissolved oxygen meter is equipped with a detection unit that can detect the oxygen content of milk for 10 seconds.

[0009] Optionally, the sampling valve includes a support tube, a handle, and a puncture head that can puncture the carton of milk. Pressing the handle can prevent leakage between the puncture head and the carton of milk. The milk in the carton of milk can be transferred to the connecting hose via the support tube.

[0010] Optionally, the puncture head is provided with a plurality of sampling holes, which are connected to the inner cavity of the support tube, allowing milk to enter the inner cavity of the support tube through the sampling holes.

[0011] Optionally, the sampling valve further includes a pressing element, a limiting element, and a sealing elastic element. The support tube is threaded through the pressing element, the limiting element, and the sealing elastic element in sequence and then screwed onto the puncture head. The handle is rotatably mounted on the support tube and can press against the pressing element to drive the pressing element and the limiting element to move synchronously toward the puncture head and squeeze the sealing elastic element.

[0012] Alternatively, the sealing elastic element can be configured as a rubber ring, which is pressed against the outside of the milk carton by the limiting element when the sampling valve is inserted into the carton of milk by pressing the handle.

[0013] Alternatively, the sealing elastic element can be configured as a rubber ring, which is pressed against the outside of the milk carton by the limiting element when the sampling valve is inserted into the carton of milk by pressing the handle.

[0014] Optionally, the pressing part is provided with a relief groove, which can avoid the support tube when the pressing part rotates relative to the support tube.

[0015] Optionally, the pressing member is provided with a first guide cylinder inside, the limiting member is provided with a second guide cylinder, the first guide cylinder and the second guide cylinder abut against each other, and the support tube can be sequentially inserted through the two.

[0016] The beneficial effects of this utility model are:

[0017] Traditional dissolved oxygen testing methods require cutting open cardboard packaging and using dissolved oxygen analyzers to measure oxygen content. However, this process exposes the milk to airborne oxygen again, leading to inaccurate measurements. This new invention, however, uses a sampling valve inserted into the milk carton, along with a peristaltic pump, dissolved oxygen analyzer, and connecting tubing. This allows the milk to be drawn into the analyzer by the pump, enabling accurate oxygen content measurement. This not only effectively avoids the milk's re-exposure to airborne oxygen but also provides precise oxygen content readings, accurately reflecting the impact of processing on dissolved oxygen levels. Furthermore, the process minimizes waste and is highly efficient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the dissolved oxygen detection device described in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the sampling valve and the carton of milk in the dissolved oxygen detection device described in this embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the sampling valve being inserted into a carton of milk in the dissolved oxygen detection device described in this embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the sampling valve in the dissolved oxygen detection device described in this embodiment of the utility model;

[0022] Figure 5 This is a first exploded schematic diagram of the sampling valve in the dissolved oxygen detection device described in this embodiment of the present invention;

[0023] Figure 6 This is a second exploded schematic diagram of the sampling valve in the dissolved oxygen detection device described in this embodiment of the present invention;

[0024] Figure 7 This is a front view of the sampling valve in the dissolved oxygen detection device described in this embodiment of the invention, in the unpressed state;

[0025] Figure 8 This is a front view schematic diagram of the sampling valve in the pressed state in the dissolved oxygen detection device according to an embodiment of this utility model.

[0026] In the picture:

[0027] 100-Carton milk; 10-Sampling valve; 20-Peristaltic pump; 30-Dissolved oxygen meter; 40-Connecting hose; 11-Support tube; 111-Rotating block; 12-Handle; 121-Pressing part; 122-Pressure part; 101-Anti-slip groove; 102-Accommodation groove; 103-Rotating hole; 104-Allowing groove; 13-Pressing element; 131-First guide cylinder; 14-Limiting element; 141-Second guide cylinder; 15-Sealing elastic element; 16-Piercing head; 161-Sampling hole. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] The technical solution of this embodiment will be further described below with reference to the accompanying drawings and specific implementation methods.

[0032] like Figures 1-8As shown, this embodiment provides a dissolved oxygen detection device for detecting the oxygen content of milk in a carton of milk 100. The dissolved oxygen detection device includes a sampling valve 10, a peristaltic pump 20, a dissolved oxygen meter 30, and a connecting hose 40. The sampling valve 10, the peristaltic pump 20, and the dissolved oxygen meter 30 are all connected by the connecting hose 40. The sampling valve 10 can be inserted into the carton of milk 100, the peristaltic pump 20 can draw milk into the dissolved oxygen meter 30, and the dissolved oxygen meter 30 can detect the oxygen content of the milk, so as to complete the sampling of milk in the carton of milk without opening the carton.

[0033] Specifically, traditional dissolved oxygen testing methods require cutting open the cardboard packaging and using dissolved oxygen instruments to measure oxygen content. In this process, the milk comes into contact with oxygen in the air again, leading to inaccurate dissolved oxygen measurements. However, in this embodiment, a sampling valve 10 is inserted into the cardboard milk 100, and in conjunction with a peristaltic pump 20, a dissolved oxygen meter 30, and a connecting hose 40, the milk is drawn into the dissolved oxygen meter 30 by the peristaltic pump 20, allowing for accurate oxygen content testing. This not only effectively avoids the milk in the cardboard milk 100 coming into contact with oxygen in the air again, but also provides a precise oxygen content reading, accurately reflecting the impact of processing technology on the product's dissolved oxygen levels. Furthermore, the testing process is efficient and does not result in excessive waste.

[0034] The specific structure of the dissolved oxygen detection device in this embodiment will be described below.

[0035] like Figures 1-3 As shown, the dissolved oxygen detection device in this embodiment includes a sampling valve 10, a peristaltic pump 20, a dissolved oxygen meter 30, and a connecting hose 40. Specifically, the sampling valve 10, the peristaltic pump 20, and the dissolved oxygen meter 30 are all connected via the connecting hose 40. For example, the sampling valve 10 can be inserted into a carton of milk 100, and the sampling valve 10 is connected to the peristaltic pump 20 via the connecting hose 40. This allows sampling of the milk inside the carton of milk 100 without opening it, so that the milk enters the peristaltic pump 20 through the connecting hose 40 under the action of the sampling valve 10. Furthermore, the peristaltic pump 20 and the dissolved oxygen meter 30 are also connected via the connecting hose 40, so that the peristaltic pump 20 can draw milk into the dissolved oxygen meter 30, which can then detect the oxygen content of the milk, thereby achieving efficient and high-quality detection without opening the carton and improving detection efficiency.

[0036] Combination Figures 4-8As shown, specifically, in this embodiment, the sampling valve 10 includes a support tube 11, a handle 12, a pressing element 13, a limiting element 14, a sealing elastic element 15, and a puncture head 16. Optionally, the puncture head 16 can puncture the carton milk 100, and pressing the handle 12 can prevent leakage between the puncture head 16 and the carton milk 100, thus ensuring the stability of subsequent sampling. Further, one end of the support tube 11 can be connected to the interior of the carton milk 100, and the other end can be connected to the connecting hose 40, so that the milk in the carton milk 100 can be transported to the connecting hose 40 through the support tube 11, and then delivered to the peristaltic pump 20 under the action of the connecting hose 40. Specifically, the support tube 11 is sequentially threaded through the pressing member 13, the limiting member 14, and the sealing elastic member 15 and then screwed onto the puncture head 16. The handle 12 is rotatably mounted on the support tube 11 and can press against the pressing member 13 to drive the pressing member 13 and the limiting member 14 to move synchronously toward the puncture head 16, thereby squeezing the sealing elastic member 15. This ensures that the puncture head 16 can be stably stuck onto the carton milk 100 under the action of the sealing elastic member 15, and there will be no leakage between the two, thereby improving the stability of the sampling valve 10 installed on the carton milk 100.

[0037] Combination Figure 5 and Figure 6 As shown, in this embodiment, a rotating block 111 is provided on the support tube 11, and the handle 12 includes a pressing part 121 and a pressing part 122. The handle 12 is also provided with an anti-slip groove 101, a receiving groove 102, a rotating hole 103, and a clearance groove 104. Specifically, one end of the support tube 11 is connected to the connecting hose 40, and the other end is provided with an external thread for screwing the piercing head 16. Further, two rotating blocks 111 are symmetrically protruding on the outer side of the support tube 11 for connecting the handle 12. Specifically, the rotating hole 103 on the pressing part 122 of the handle 12 is provided in the receiving groove 102, and the rotating block 111 can be inserted into the rotating hole 103. Thus, the pressing part 122 is rotatably connected to the support tube 11 under the cooperation of the rotating block 111 and the rotating hole 103, thereby realizing the rotatable connection between the handle 12 and the support tube 11. For example, the receiving groove 102 can provide external protection for the rotating block 111, preventing the external environment from affecting its rotation. Specifically, when the pressing part 121 is pressed towards the piercing head 16, the pressing part 122 can rotate relative to the support tube 11 and squeeze the pressing member 13, thereby pushing the limiting member 14 to squeeze the sealing elastic member 15, thereby improving the sealing between the piercing head 16 and the carton milk 100.

[0038] like Figure 7 and Figure 8As shown, exemplarily, in this embodiment, the handle 12 has at least two states: a non-pressed state and a pressed state. In the non-pressed state, the positions of the pressing member 13 and the limiting member 14 do not change, and the sealing elastic member 15 is not compressed, nor does its shape change. In the pressed state, the handle 12 presses against the pressing member 13, causing the pressing member 13 to push the limiting member 14 to squeeze the sealing elastic member 15. The sealing elastic member 15 deforms and presses against the puncture head 16. During actual testing, the sealing elastic member 15 presses against the outside of the carton milk 100, thus ensuring the stable installation of the sampling valve 10. Exemplarily, in this embodiment, the pressing part 121 and the pressing part 122 are integrated to ensure their mechanical strength, and are configured as a Z-shaped structure so that when a downward force is applied to one end, the other end can squeeze the structure below.

[0039] Specifically, the pressing part 121 is provided with an anti-slip groove 101 to increase the friction between the operator's hand and the pressing part 121 when pressing it, thus preventing slippage. Furthermore, the abutting part 122 is provided with a relief groove 104, and in this embodiment, the relief groove 104 is arc-shaped. This allows the relief groove 104 to avoid the support tube 11 when the pressing part 122 rotates relative to the support tube 11, thereby preventing the support tube 11 from interfering with the rotation of the handle 12.

[0040] like Figure 5 and Figure 6 As shown, in this embodiment, the pressing member 13 is further provided with a first guide cylinder 131 inside, and the limiting member 14 is provided with a second guide cylinder 141. Exemplarily, the first guide cylinder 131 inside the pressing member 13 can guide the support tube 11, preventing it from shifting position during installation. Further, the limiting member 14 is provided with a limiting plate and a second guide cylinder 141, wherein the outer diameter of the second guide cylinder 141 is smaller than the outer diameter of the limiting plate, and the outer diameter of the limiting plate is larger than the outer diameter of the sealing elastic member 15 and the outer diameter of the piercing head 16. Thus, when the handle 12 pushes it towards the piercing head 16, the limiting plate can ensure that the pressing member 13 and the limiting member 14 do not enter the carton milk 100. Further, the first guide cylinder 131 and the second guide cylinder 141 abut against each other, and the support tube 11 can be sequentially inserted through both, thereby ensuring the rapid installation of the support tube 11. Specifically, the inner and outer diameters of the first guide cylinder 131 and the second guide cylinder 141 are the same, so as to avoid other movement interference between the pressing member 13 and the limiting member 14, and also to ensure that when the handle 12 presses the pressing member 13, its force can be stably transmitted to the limiting member 14.

[0041] Optionally, in this embodiment, the sealing elastic element 15 is set as a rubber ring, and after the sampling valve 10 is inserted into the carton milk 100, by pressing the handle 12, the sealing elastic element 15 can be squeezed to the outside of the carton milk 100 by the limiting element 14, thereby ensuring the stable installation of the sampling valve 10 on the carton milk 100. Figure 6 As shown, in this embodiment, the puncture head 16 is configured as a conical structure, and it is provided with a plurality of sampling holes 161. Specifically, the plurality of sampling holes 161 are evenly distributed on the side wall of the puncture head 16, and all of them are through-holes, so that the sampling holes 161 can be connected to the inner cavity of the support tube 11, so that the milk of the carton milk 100 can enter the inner cavity of the support tube 11 through the sampling holes 161, and finally be delivered out through the connecting hose 40.

[0042] like Figure 1 As shown, in this embodiment, the dissolved oxygen meter 30 is equipped with a valve and a test button. When the dissolved oxygen meter 30 is not in operation, the valve is normally closed. Pressing the test button switches the normally closed valve to the open state, thus enabling the testing of the milk. Exemplarily, the dissolved oxygen meter 30 also includes a detection unit capable of detecting the oxygen content of the milk for 10 seconds, ensuring more accurate data. Exemplarily, in this embodiment, the dissolved oxygen meter 30 uses an Anton Paar wide-range dissolved oxygen meter, specifically the OxyQC Wind Range model.

[0043] Working process: Shake the carton milk 100 for at least 1 minute to establish gas-liquid equilibrium in the sample. In other embodiments, a shaker can also be used to shake the sample. Then, turn the carton milk 100 over and use the sampling valve 10 to penetrate the bottom of the carton milk 100 until it is pierced. Next, press down on the handle 12 to compress the sealing elastic element 15. The carton milk 100 is then firmly fixed between the sealing elastic element 15 and the limiting element 14, achieving a good sealing effect. Then place the carton milk 100 at a slightly higher position and the waste container at a lower position. Press the test button on the dissolved oxygen meter 30 and simultaneously turn on the peristaltic pump 20 to start the sample injection, which takes about 10 seconds. After the sample injection is completed, turn off the peristaltic pump 20 and wait for the dissolved oxygen meter 30 to detect the oxygen content. After the measurement is completed, remove the puncture head 16 from the carton milk 100. After the last measurement, use the peristaltic pump 20 to rinse the entire device with warm deionized water, especially rinsing the puncture head 16.

[0044] For example, in this embodiment, the dissolved oxygen detection device can measure the dissolved oxygen level in the milk inside the carton 100 without opening it, thus avoiding contact between air and milk while accurately reflecting the impact of processing technology and packaging on the dissolved oxygen level of the product. Specifically, commonly used packaging such as Tetra Pak, Tetra Slim, Tetra Diamond, Tetra Smile, Combibloc, and Perfection can all be tested using the dissolved oxygen detection device in this embodiment. This device is not only portable but also convenient for testing in laboratories and workshops, making it widely applicable.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A dissolved oxygen detection device for detecting the oxygen content of milk in carton milk (100), characterized in that, The dissolved oxygen detection device includes: The sampler includes a sampling valve (10), a peristaltic pump (20), a dissolved oxygen meter (30), and a connecting hose (40). The sampling valve (10), the peristaltic pump (20), and the dissolved oxygen meter (30) are all connected by the connecting hose (40). The sampling valve (10) can be inserted into the carton milk (100), the peristaltic pump (20) can draw milk into the dissolved oxygen meter (30), and the dissolved oxygen meter (30) can detect the oxygen content of the milk. This allows for sampling of the milk in the carton milk (100) without opening the carton milk (100).

2. The dissolved oxygen detection device according to claim 1, characterized in that, The dissolved oxygen meter (30) is equipped with a valve and a test button. The test button can switch the normally closed valve to the open state to test the milk.

3. The dissolved oxygen detection device according to claim 2, characterized in that, The dissolved oxygen meter (30) is equipped with a detection unit, and the detection unit is capable of detecting the oxygen content of milk for 10 seconds.

4. The dissolved oxygen detection device according to claim 1, characterized in that, The sampling valve (10) includes a support tube (11), a handle (12), and a puncture head (16). The puncture head (16) can puncture the carton milk (100), and by pressing the handle (12), leakage between the puncture head (16) and the carton milk (100) can be avoided. The milk in the carton milk (100) can be transferred to the connecting hose (40) through the support tube (11).

5. The dissolved oxygen detection device according to claim 4, characterized in that, The puncture head (16) is provided with a plurality of sampling holes (161), which are connected to the inner cavity of the support tube (11). Milk can enter the inner cavity of the support tube (11) through the sampling holes (161).

6. The dissolved oxygen detection device according to claim 4, characterized in that, The sampling valve (10) further includes a pressing member (13), a limiting member (14), and a sealing elastic member (15). The support tube (11) is threaded through the pressing member (13), the limiting member (14), and the sealing elastic member (15) in sequence and then screwed onto the puncture head (16). The handle (12) is rotatably mounted on the support tube (11) and can press against the pressing member (13) to drive the pressing member (13) and the limiting member (14) to move synchronously toward the puncture head (16) and squeeze the sealing elastic member (15).

7. The dissolved oxygen detection device according to claim 6, characterized in that, The sealing elastic element (15) is set as a rubber ring. After the sampling valve (10) is inserted into the carton milk (100), the sealing elastic element (15) is squeezed to the outside of the carton milk (100) by the limiting element (14) by pressing the handle (12).

8. The dissolved oxygen detection device according to claim 6, characterized in that, The handle (12) includes a pressing part (121) and a pressing part (122). The pressing part (122) is rotatably connected to the support tube (11). When the pressing part (121) is pressed toward the puncture head (16), the pressing part (122) can rotate relative to the support tube (11) and squeeze the pressing member (13) to push the limiting member (14) to squeeze the sealing elastic member (15).

9. The dissolved oxygen detection device according to claim 8, characterized in that, The pressing part (122) is provided with a relief groove (104). When the pressing part (122) rotates relative to the support tube (11), the relief groove (104) can avoid the support tube (11).

10. The dissolved oxygen detection device according to claim 6, characterized in that, The pressing member (13) is provided with a first guide cylinder (131) inside, and the limiting member (14) is provided with a second guide cylinder (141). The first guide cylinder (131) and the second guide cylinder (141) abut against each other, and the support tube (11) can be sequentially inserted into the two.

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